EP4241948A1 - Agrégat pour l'usinage d'une surface de chant d'un panneau en matériau dérivé du bois et procédé d'usinage - Google Patents

Agrégat pour l'usinage d'une surface de chant d'un panneau en matériau dérivé du bois et procédé d'usinage Download PDF

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Publication number
EP4241948A1
EP4241948A1 EP23159555.4A EP23159555A EP4241948A1 EP 4241948 A1 EP4241948 A1 EP 4241948A1 EP 23159555 A EP23159555 A EP 23159555A EP 4241948 A1 EP4241948 A1 EP 4241948A1
Authority
EP
European Patent Office
Prior art keywords
tool
edge surface
wood
based panel
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23159555.4A
Other languages
German (de)
English (en)
Inventor
Bodo Mündkemüller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP4241948A1 publication Critical patent/EP4241948A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/006—Trimming, chamfering or bevelling edgings, e.g. lists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/08—Disc-type cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
    • B27C5/003—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor copy milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/003—Other working of veneer or plywood specially adapted to veneer or plywood securing a veneer strip to a panel edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/04—Angles
    • B23C2210/0485—Helix angles
    • B23C2210/0492—Helix angles different
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/08—Side or top views of the cutting edge
    • B23C2210/084—Curved cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/72—Rotatable in both directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2230/00—Details of chip evacuation
    • B23C2230/04—Transport of chips

Definitions

  • the present application relates to a unit for processing an edge surface of a wood-based panel according to the preamble of claim 1. Furthermore, the application relates to a device for processing an edge surface of a wood-based panel according to the preamble of claim 8. Finally, the present application relates to a method for processing a wood-based panel according to the preamble of claim 14.
  • Wood-based panels can be made, for example, from chipboard, MDF panels and the like. They are used in particular in the area of furniture construction, for example in the kitchen furniture industry. These wood-based panels, which typically have a small thickness in relation to their length and width, are usually cut to a predetermined size using a device, which creates edge surfaces on the edges of the cut edges. In order to cover these, edge profiles are placed on the edge surfaces and attached to the edge surface using glue. The edge profiles form a visually clean edge of the wood-based panel as well as protection against the penetration of moisture into the respective wood-based panel.
  • the unit includes a tool that can be driven in rotation about a tool axis.
  • the tool has a working area that runs in a circular ring around the tool axis.
  • the tool can be designed in the form of a circular disk, which has a radius relative to the tool axis and a thickness measured parallel to the tool axis, which is measured between an upper and a lower end face of the tool. It is particularly conceivable here that the radius in which the working area extends around the tool axis exceeds the thickness of the tool, the radius preferably being at least twice as large, preferably at least three times as large, more preferably at least four times as large the fat.
  • the working area which can be designed in particular in the form of a tangential surface of the tool relative to the tool axis, has a working relief that has elevations and depressions oriented relative to the tool axis.
  • the work relief can in particular be roughened in the manner of sandpaper, wherein the work relief in the work area has a large variety of minute ridges and depressions that form the roughness.
  • edge profiles to the known surfaces of a respective wood-based panel is subject to high demands on technical processing.
  • unevenness that is present in the edge surface after the wood-based panel has been cut can remain visible after the respective edge profile has been applied, since the unevenness "pushes through” the (typically very thin) edge profile, so to speak.
  • unevenness can lead to inadequate adhesion of the edge profile to the respective edge surface, which means that long-term at least local detachment of the edge profile must be expected.
  • German disclosure document suggests DE 10 2014 225 849 A1 a device that processes the edge surface before applying a respective layer of glue.
  • Various tools are used here to remove chips that protrude from the respective edge surface of the wood-based panel.
  • the edge surface is ground and then smoothed.
  • the latter step includes in particular the pressing in of remaining chips and other unevenness, which is intended to achieve a surface that is as flat as possible.
  • the known device has proven to be disadvantageous in that the removal of chips and other particles that protrude from the edge surface cannot be achieved in a sufficiently reliable manner.
  • a glue application which is carried out following the processing of the edge surface, particles continue to be removed from the edge surface. These particles are then returned to the so-called “glue pot” in which the glue is kept. This regularly leads to blockages in the respective glue application system as well as a unclean application of the glue, which in turn results in poor adhesion of the edge profile to the edge surface.
  • the present application is therefore based on the object of providing a device by means of which the preparation of a respective edge surface of a wood-based panel is improved before the application of glue to fasten an edge profile.
  • the unit according to the invention is characterized in that the working area is convex.
  • This shape is present in relation to a cross section of the tool, which includes the tool axis of the tool.
  • the convex, also referred to as "spherical" shape of the working area is expressed in the fact that a radius measured from the tool axis to an outer surface in a central region of the tool, viewed in relation to the thickness of the tool, is larger than a similarly measured radius on an upper one or bottom edge of the tool.
  • the working area is preferably designed to be symmetrical over a height measured parallel to the tool axis, so that the working area has a high point in its center viewed in terms of height with respect to the tool axis and is shaped to taper radially towards the tool axis in the same way towards the opposite end faces of the tool.
  • the working area can have the shape of a parabola, particularly when viewed in cross section.
  • the shape of the working area is preferably symmetrical with respect to a central plane of the tool, which extends perpendicular to the tool axis and divides the tool centrally into two equal halves.
  • a radius measured from the tool axis to the working area of the tool is larger in the central plane than in the front edge planes of the tool.
  • the unit according to the invention has many advantages.
  • the convex design of the working area results in more particles being lifted off the edge surface of the wood-based panel in a central region viewed in the thickness direction of the wood-based panel than on opposite edges of the edge surface, which are assigned to an upper side or an underside of the wood-based panel.
  • the edge surface is provided with a concave shape corresponding to the convex working area. This type of intervention results in the particles that protrude in an undesirable manner on the edge surface being lifted off in a reliable manner.
  • the different extent of the engagement of the tool across the thickness of the wood-based panel is particularly advantageous in view of the above-mentioned aspect of the different quality levels of the wood-based panel (dense edge areas and coarse central layer of poorer quality), since the lifting of protruding particles is increasingly carried out where the problem is such particle is most pronounced.
  • tests have shown that there is a greatly reduced lifting and the subsequent entry of particles into a respective glue pot in which the glue is kept.
  • the edge surface is smoothed to such an extent that significant unevenness, which could otherwise arise as a result of protruding particles, in particular chips, is eliminated.
  • This has the advantage that a respective edge profile that is glued onto the edge surface does not have any visually disturbing elevations or the like. The quality of the finished wood-based panel is thus improved when using the unit according to the invention.
  • the formation of local cavities beneath the glued-on edge profile is reduced, preferably completely prevented, so that the risk of unwanted detachment of the edge profile from the edge surface is minimized.
  • the unit has an advantageous effect on the processing of edge surfaces of an MDF board.
  • the edge surfaces of such wood-based panels are typically extremely smooth, i.e. have very little roughness. This is disadvantageous for the application of glue and the application of an edge profile, since the surface of the edge surface is comparatively small due to the very smooth structure.
  • the edge surface is slightly roughened. A similar roughening is achieved using the unit or the tool. Accordingly, processing such a wood-based panel using the unit according to the invention leads to better adhesion of the edge profile applied later.
  • the tool is preferably provided with a diamond coating in the work area.
  • This has the advantage that the service life of the tool is particularly long due to the high hardness of such a coating. It is also possible to renew the diamond coating repeatedly, so that the tool as such can be used over a long period of time without having to be replaced as a whole. Finally, using a diamond coating, it is particularly easy to create a rough working relief, by means of which the desired lifting of protruding particles can be achieved particularly efficiently.
  • a tool body of the tool can be made of aluminum or steel, for example.
  • the unit comprises at least two feeler rollers, each of which is designed to be rotatable about an axis of rotation.
  • the axes of rotation of the feeler rollers are preferably oriented parallel to one another and parallel to the tool axis.
  • the feeler rollers are designed to guide the tool at a distance relative to the edge surface.
  • the feeler rollers are coupled to the tool in such a way that they can influence the distance between the tool and the edge surface of the wood-based panel. This can be done, for example, using coupling arms. This allows the tool to be guided particularly precisely relative to the edge surface.
  • the tool is arranged between the feeler rollers.
  • This arrangement has the result that the edge surface at a respective point in the course of processing by means of the unit first comes into contact with the contact surface of the first feeler roller, then with the working area of the tool and finally with the contact surface of the second feeler roller.
  • This type of arrangement is particularly advantageous for the distance-based guidance of the tool relative to the edge surface, since the tool is guided relative to the wood-based panel in both an inlet and an outlet by means of a feeler roller.
  • the unit is equipped with the described feeler rollers, it can also be advantageous if these are arranged relative to the tool in such a way that when a wood-based panel is moved relative to the unit as intended, the edge surface of the wood-based panel comes into contact with both the contact surfaces of the feeler rollers and with comes into contact with the working area of the tool.
  • the advantage can be achieved that the feeler rollers as such engage with the edge surface and This allows particles that protrude over the edge surface to press in towards the wood-based panel.
  • the feeler rollers have a smoothing effect on the edge surface of the wood-based panel. This further reduces the unwanted lifting of particles during the glue application, which takes place after the wood-based panel has been processed using the unit.
  • the work area has a diamond coating that is formed in the work relief.
  • a work area is particularly suitable for engaging with the edge surface of the wood-based panel and thereby lifting off protruding particles in the desired manner.
  • the diamond coating preferably has a CAMI grain size of at least 100, preferably at least 150, more preferably at least 200.
  • the tool comprises at least one discharge channel which is formed in the work area.
  • the discharge channel is set back radially in the direction of the tool axis relative to a radially outer surface of the tool in the working area and therefore forms, so to speak, a local depression in the working area.
  • the discharge channel is suitable for removing particles, in particular chips, removed from the edge surface of the wood-based panel from the work area.
  • the discharge channel extends in the thickness direction of the tool in such a way that it opens into an environment of the tool on at least one end face of the tool, preferably on both opposite end faces of the tool.
  • the extension of the discharge channel in the thickness direction can be understood as a vectorially proportional extension, with a longitudinal axis of the discharge channel having, for example, a component oriented parallel to the tool axis and a component oriented in the circumferential direction of the tool.
  • the discharge channel is aligned obliquely with respect to the tool axis, preferably at an angle of 45° with respect to the tool axis.
  • the discharge channel is designed to be straight or curved, in particular curved several times.
  • the removal channel opens into a free space or an environment at least at one point away from the work area, so that removed particles flow from the edge surface that is in engagement with the work area in the direction of the free space or the environment can be dissipated.
  • the working area is completely formed by a zigzag-shaped system along its circumference consists of discharge channels, each of which is preferably designed to be inclined at a projected angle of 45° relative to the tool axis. The particles lifted off by means of the working relief can then be guided directly into the nearest removal channel and carried away to one of the end faces of the tool using this removal channel.
  • the discharge channels preferably extend between the end faces of the tool, reaching the end faces in such a way that they are each open at the end faces to the surroundings of the tool. In this way, the lifted particles can emerge directly from the front sides of the discharge channels.
  • a corresponding embodiment is illustrated below in the context of the exemplary embodiment.
  • the tool has a flushing channel which extends in the radial direction with respect to the tool axis through a tool body of the tool.
  • the flushing channel extends from a peripheral surface of the tool to a central shaft receptacle of the tool, which is formed centrally on the tool and in which a drive shaft can be stored.
  • the shaft holder is designed concentrically around the tool axis and forms a recess into which a drive shaft can be inserted.
  • the rinsing channel is suitable, in particular, for directing a rinsing air stream to the peripheral surface of the tool. This can form both a radially outer end of the working area and a bottom of a discharge channel, which is set back radially from the working area in the direction of the tool axis.
  • the tool preferably comprises a plurality of flushing channels, which are advantageously designed to be distributed equidistantly around the tool axis.
  • the flushing channel is designed to be straight, so that it forms the lowest possible flow resistance for a flushing air flow.
  • the flushing channel is preferably designed to be open towards the shaft holder. This makes it particularly easy to supply the rinsing channel with a rinsing air stream, in which case in particular a drive shaft, which is accommodated in the shaft receptacle, can be designed in the form of a hollow shaft. In this way, it is possible to send the purge air flow starting from a pressure source, in particular from a compressor, through a flow channel formed in the drive shaft designed as a hollow shaft to the purge channel and finally through the purge channel peripheral surface of the tool. There, under the effect of such a purging air flow, it is particularly easy to remove particles that have lifted off the edge surface. In particular, the particles that occur in a removal channel can be mobilized in the removal channel by means of the purging air flow and transported along the removal channel to an end at which the particles exit, for example, into an environment of the tool.
  • the device comprises an aggregate according to the above description, by means of which an edge surface of a wood-based panel can be processed in advance of a glue application.
  • the device further comprises a drive unit by means of which the unit can be operated.
  • the drive unit has at least one electric drive, in particular in the form of an electric motor, by means of which a drive shaft of the drive unit can be driven in rotation.
  • This drive shaft is connected in a torque-transmitting manner to the tool of the unit, which has a corresponding shaft holder.
  • This is in particular designed concentrically to the tool axis of the tool, with the tool preferably being designed in the form of a circular disk.
  • the unit according to the invention can be operated particularly easily using the device according to the invention.
  • the resulting advantages have already been explained above.
  • due to the convex design of the working area of the tool it is particularly easy to prepare the edge surface of the wood-based panel for a glue application. This ensures that particles protruding beyond the edge surface are reliably lifted off, thereby preventing unintentional entry of these particles into a glue pot of the glue.
  • the device comprises a tensioning device by means of which the unit can be pretensioned in the direction of a respective edge surface.
  • the clamping device is therefore suitable for pressing the unit against the edge surface, which ensures continuous engagement of the tool with the edge surface.
  • the unit preferably has two feeler rollers as described above, the clamping device is also suitable for keeping contact surfaces of the feeler rollers equally in contact with the edge surface of the wood-based panel.
  • the feeler rollers are used here as explained above primarily to hold the tool at a defined distance from the edge surface and to guide it relative to the edge surface. In this way, unintentional engagement of the tool with the edge surface is prevented, in which the tool, for example, enters the wood-based panel so deeply that material is removed comparable to a milling.
  • the clamping device is equipped with a double-acting piston-cylinder unit that has two working spaces. These working spaces can alternatively be acted upon with a working fluid, in particular air, whereby the piston of the piston-cylinder unit can alternatively be extended out of the cylinder or retracted into the cylinder.
  • a working fluid in particular air
  • the clamping device further comprises a compressor, by means of which the working spaces can be alternately pressurized with pneumatic pressure.
  • the working fluid is formed by a gas, in particular air.
  • the drive shaft is designed in the form of a hollow shaft.
  • This provides a flow channel for a cleaning medium, in particular a flushing air flow.
  • the drive shaft interacts directly or indirectly with a pressure source at an end facing away from the shaft receptacle of the tool, by means of which the cleaning medium can be guided into the flow channel.
  • This pressure source can in particular be formed by a compressor, by means of which a purge air flow can be generated and directed into the flow channel. In this way, the cleaning medium can be conducted to the tool through the flow channel formed in the drive shaft.
  • the tool has at least one flushing channel as described above.
  • the cleaning medium can be directed from the shaft holder to the peripheral surface of the tool. This makes it possible to continuously remove the particles lifted from the edge surface, which means that the tool can be operated reliably.
  • the at least one flushing channel is designed in such a way that it is in fluid communication with the flow channel of the drive shaft, so that the cleaning medium can pass directly from the flow channel of the drive shaft into the flushing channel.
  • the flushing channel opens into a removal channel on the circumference of the tool, the removal channel being formed in a working area of the tool as described above.
  • the method provides that the edge surface of a wood-based panel is processed using a tool of an assembly according to the invention before an edge profile is glued on.
  • the device can have a control unit that is set up to control the drive unit depending on the feed speed and/or the type of wood-based panel, so that operating parameters of the tool are changed.
  • the control can in particular relate to the speed and/or the direction of rotation of the tool.
  • the control unit cooperates with at least one sensor device, by means of which information about the feed speed and/or the type of wood-based panel can be detected and passed on to the control unit. In this way, the device is suitable for changing the operating parameters of the tool automatically, that is to say in particular without the manual involvement of a machine operator.
  • An embodiment that is in the Figures 1 to 7 comprises an inventive unit 1 , which is set up for processing an edge surface 2 of a wood-based panel 3 . Such processing takes place in advance of an application of glue, which is applied to the edge surface 2 for the purpose of gluing an edge profile not shown in the figures.
  • the unit 1 includes a tool 5 , which is designed here in the form of a circular disk.
  • the tool 5 is mounted so that it can rotate about a tool axis 4 , the tool 5 having a shaft receptacle 17 designed concentrically to the tool axis 4 . This is suitable for interacting with a drive shaft 18 of a drive unit 20 , so that the tool 5 can be driven in rotation.
  • the tool 5 further comprises a working area 10 which runs in a circular ring around the tool axis 4 and which forms a radially external end of the tool 5 with respect to the tool axis 4 . When the unit 1 is in operation, it is provided that the tool 5 comes into machining contact with the edge surface 2 with its working area 10 .
  • the working area 10 has a working relief, by means of which the tool 5 engages with the edge surface 2 when used as intended.
  • the work relief is formed by a diamond coating which is arranged in the work area 10 .
  • the diamond coating has a CAMI grain size of 250.
  • the tool 5 in the example shown has a plurality of discharge channels 13 , which are arranged radially on the outside and are designed in the form of a depression, that is to say a radial recess relative to the working area 10 .
  • the discharge channels 13 are straight and run at an angle of 45° relative to the tool axis 4 .
  • the discharge channels 13 extend over an entire thickness 11 of the tool 5 , ie from a lower end face 14 to an upper end face 14 of the tool 5 , with the discharge channels 13 extending proportionally in the circumferential direction and proportionally in the thickness direction of the tool 5 .
  • the Discharge channels 13 are particularly good based on the Figures 6 and 7 .
  • the discharge channels 13 form a zigzag-shaped profile in the work area 10 .
  • the working area 10 of the tool 5 is convex. This is particularly clear from the illustration Figure 5
  • the convex design has the result that a frontal radius 33 of the tool 5, measured in an edge plane of the tool 5 , is smaller than a central radius 34 of the tool 5 , measured in a central plane.
  • the working area 10 is designed symmetrically with respect to the center plane, which extends perpendicular to the tool axis 4 and divides the tool 5 in the middle, so that the radius 34 measured in the center plane represents a maximum radius of the tool 5 , while the front side , radii 33 measured in the edge planes are minimum radii of the tool 5 .
  • This convex, sometimes also referred to as "spherical" shape of the working area 10 has the advantage that the tool 5 engages with the edge surface 2 to varying degrees across the thickness of the wood-based panel 3 and leads to the desired lifting of protruding particles, especially in a central position the wood-based panel 3 , which is typically most affected by unwanted protruding particles due to its lower density.
  • the extent to which the work area 10 is convex is in Figure 5 exaggerated.
  • the maximum radius 34 can be between 2% and 10%, preferably between 3% and 8%, more preferably between 4% and 6%, larger than the minimum radius 33 of the tool 5 . This feature can be advantageous regardless of the other features of the exemplary embodiment.
  • the unit 1 includes feeler rollers 8 , 9 , which are particularly well illustrated by Figure 4 however, for the sake of simplicity Figure 1 are not shown.
  • the feeler rollers 8 , 9 are coupled to the tool 5 by means of coupling arms 30 , 31 in such a way that the feeler rollers 8 , 9 are connected to the tool 5 in a force-transmitting manner.
  • the feeler rollers 8 , 9 are arranged relative to the tool 5 in such a way that the wood-based panel 3 moves in one direction Feed direction 29 relative to the unit 1 first comes into contact with a contact surface 12 of the feeler rollers 9 , then with the working area 10 of the tool 5 and finally with a contact surface 12 of the feeler roller 8 .
  • the tool 5 is arranged between the feeler rollers 8 , 9 .
  • the feeler rollers 8 , 9 are set up to guide the tool 5 at a distance relative to the wood-based panel 3 , so that mechanical engagement of the working area 10 with the edge surface 2 occurs only minimally, namely exclusively in the desired, particle-lifting manner.
  • a grinding, planned removal of material in the edge surface 2 over the entire thickness of the wood-based panel 3 is not intended.
  • the feeler rollers 8 , 9 also have a mechanical effect on the edge surface 2 , in that the feeler rollers 8 , 9 can press particles, in particular chips, protruding over the edge surface 2 and in particular press them into the material of the wood-based panel 3 , whereby a smoothing effect is exerted on the edge surface 2 .
  • the wood-based panel 3 is moved in the feed direction 29 relative to the unit 1 , the feeler rollers 8 , 9 being freely rotatable about their respective axes of rotation 6 , 7 and due to a rubbing contact on the contact surfaces 12 with the Roll off edge surface 2 on the latter.
  • the tool 5 is meanwhile actively driven in rotation by means of the drive shaft 18 in a direction of rotation 32 , which in the example shown is oriented counter to the feed direction 29 .
  • the device 19 includes the aforementioned drive unit 20 , which in the example shown includes an electric drive 21 in the form of an electric motor.
  • the drive 21 is coupled by means of an output shaft to an output pulley 36 , which in turn is connected to a drive pulley 37 by means of a drive belt 35 .
  • a torque provided by the drive 21 can be transmitted to the drive shaft 18 , which cooperates with the drive pulley 37 , via the belt drive formed by the driven pulley 36, the drive belt 35 and the drive pulley 37 . Due to the torque-transmitted coupling of the drive shaft 18 with the tool 5 , the latter can effectively be driven in rotation by means of the drive 21 .
  • the device 19 further comprises a clamping device 22 , which in the example shown is formed by a piston-cylinder unit 23 .
  • the tensioning device 22 includes a piston 41 , which is directly connected to a housing 42 of the device 19 .
  • the housing 42 is mounted on plain bearings 38 so that it can be moved parallel to a stroke direction of the piston 41 .
  • the piston-cylinder unit 23 is designed to be double-acting and includes two working spaces 24 , 25 . These are alternate can be acted upon with a working fluid, which is formed here by air.
  • the two work spaces 24 , 25 are connected to a compressor 26 , with a line from the compressor 26 to the work spaces 24 , 25 being controllable by means of shut-off valves 39 in the example shown.
  • the unit 1 can be pretensioned against the edge surface 2 , with the working space 25 being subjected to pneumatic pressure.
  • the piston 41 is extended from the piston-cylinder unit 23 and the housing 42 , together with the unit 1 arranged thereon, is moved towards the wood-based panel 3 .
  • the working space 24 is alternatively pressurized with pneumatic pressure so that the piston 41 is drawn into the cylinder.
  • the tool 5 then loses its engagement with the edge surface 2 of the wood-based panel 3 .
  • the tool 5 in the example shown is equipped with a total of four flushing channels 16 , which can be seen particularly well based on the illustration Figure 3 result.
  • the flushing channels 16 extend radially in relation to the tool axis 4 within a tool body 15 .
  • the flushing channels 16 can be drilled into the tool body 15 .
  • the flushing channels 16 open, on the one hand, radially on the inside into the shaft receptacle 17 and, on the one hand, radially on the outside, into discharge channels 13 .
  • the drive shaft 18 is designed as a hollow shaft, so that the drive shaft 18 forms a flow channel 27 .
  • the drive shaft 18 also includes radial openings, by means of which a fluidic connection to the flushing channels 16 is established in the area of the shaft receptacle 17 .
  • a purge air stream 40 which is fed to the flow channel 27 of the drive shaft 18 from a compressor 28 , into the purge channels 16 , through which the purge air stream 40 reaches the discharge channels 13 . There it can emerge and discharge particles that are present in the discharge channels 13 from them. This ensures the reliable removal of particles that are removed from the edge surface 2 of the wood-based panel 3 .
  • the device 19 according to the invention When the device 19 according to the invention is operated as intended, a large number of wood-based panels 3 are fed to the unit 1 one after the other, the unit 1 typically being designed to be stationary and the wood-based panels 3 moved in the feed direction 29 relative to the unit 1 and in this way on the unit 1 be guided along.
  • the unit 1 comes into proper engagement with the respective edge surface 2 of the wood-based panel 3 both with the feeler rollers 8 , 9 and with the tool 5 , thereby in the desired manner protruding particles on the edge surface 2 are removed. In this way, undesirable lifting of such particles in the course of applying glue to the edge surface 2 combined with the introduction of these particles into a glue pot of the glue is avoided.
  • the edge surface 2 After processing the edge surface 2 by means of the unit 1, the edge surface 2 is coated with glue using a device for applying glue, which is not shown in the figures and is basically known in the prior art, whereupon a respective edge profile with which the edge surface 2 is to be covered , applied and pressed.
  • glue a device for applying glue
  • the tool 5 in the example shown is rotationally driven at a speed of 500 revolutions per minute about the tool axis 4 in the direction of rotation 32 .
  • the direction of rotation 32 of the tool 5 is therefore in the opposite direction to the feed direction 29 of the wood-based panel 3 in the example shown.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
EP23159555.4A 2022-03-07 2023-03-02 Agrégat pour l'usinage d'une surface de chant d'un panneau en matériau dérivé du bois et procédé d'usinage Pending EP4241948A1 (fr)

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DE102022105259.1A DE102022105259A1 (de) 2022-03-07 2022-03-07 Aggregat zur Bearbeitung einer Kantenfläche einer Holzwerkstoffplatte

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EP4241948A1 true EP4241948A1 (fr) 2023-09-13

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Citations (5)

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DE19947164C1 (de) * 1999-10-01 2001-08-23 Sanipa Gmbh Badeinrichtungen Verfahren zur Herstellung einer Softformingkante sowie Umleimer zur Verwendung in einem solchen Verfahren
EP1997597A2 (fr) * 2007-05-21 2008-12-03 SCM GROUP S.p.A. Appareil et procédé pour appliquer un bord de protection et panneau composite avec des bords
DE102010003274A1 (de) * 2010-03-25 2011-09-29 Homag Holzbearbeitungssysteme Ag Bearbeitungsaggregat
DE102014225849A1 (de) 2014-12-15 2016-06-16 Konrad Scholz Kantenbeschichtung von Möbelplatten
DE102017207675A1 (de) * 2016-05-09 2017-11-09 Scm Group S.P.A. Fräsaggregat mit verstellbarer Kopiereinrichtung

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DE7107042U (de) 1970-12-29 1975-05-15 Roth W Rotierendes Aufrauhwerkzeug
DE19518925A1 (de) 1995-05-23 1996-11-28 Homag Maschinenbau Ag Verfahren und Vorrichtung zur Durchlauf-Bearbeitung von im wesentlichen flächigen oder leistenförmigen Werkstücken aus offenporigen Holzwerkstoffen und dergleichen im Kantenbereich
DE10100516A1 (de) 2001-01-08 2002-07-11 Josef Schiele Ohg Verfahren und Vorrichtung zum Glätten der Kantenflächen von Werkstücken
DE10323907A1 (de) 2003-05-23 2004-12-23 Ima Klessmann Gmbh Holzbearbeitungssysteme Bearbeitungsaggregat mit vertikaler Arbeitsspindel für eine Holzbearbeitungsmaschine
PL400042A1 (pl) 2012-07-19 2014-01-20 Fabryka Mebli Biurowych Mdd Spólka Z Ograniczona Odpowiedzialnoscia Sposób oklejania krawedzi plyty meblowej
EP3034256B1 (fr) 2014-12-15 2018-04-18 Konrad Scholz Patin a rouleaux
ITUB20152808A1 (it) 2015-08-03 2017-02-03 Scm Group Spa Apparato per rettificare bordi di pannelli
DE102021132156B3 (de) 2021-12-07 2023-04-27 Konrad Scholz Glättvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19947164C1 (de) * 1999-10-01 2001-08-23 Sanipa Gmbh Badeinrichtungen Verfahren zur Herstellung einer Softformingkante sowie Umleimer zur Verwendung in einem solchen Verfahren
EP1997597A2 (fr) * 2007-05-21 2008-12-03 SCM GROUP S.p.A. Appareil et procédé pour appliquer un bord de protection et panneau composite avec des bords
DE102010003274A1 (de) * 2010-03-25 2011-09-29 Homag Holzbearbeitungssysteme Ag Bearbeitungsaggregat
DE102014225849A1 (de) 2014-12-15 2016-06-16 Konrad Scholz Kantenbeschichtung von Möbelplatten
DE102017207675A1 (de) * 2016-05-09 2017-11-09 Scm Group S.P.A. Fräsaggregat mit verstellbarer Kopiereinrichtung

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